Ratliff hasn't played this season after being cut by the Dallas Cowboys following a failed physical. Ratliff signed with the Bears in early November but needed several weeks to be fully ready to play. He was listed as questionable with a groin injury.

The Bears rush defense has been one of the worst in the NFL. The prospect of watching Peterson gash them up the middle had to concern defensive coordinator Mel Tucker.

While Paea and Ratliff won't revolutionize the Bears' banged-up, struggling defense, their presence in the lineup is certainly a positive step.

UPDATE: As expected, both Ratliff and Paea are active and will play Sunday for the Bears.